Done recently in end of Jan - answer is still the same.
Be prepared to sprint or walk fast. Being Elite has no bearing to your fitness levels or queues in LAX. As for showers, you'll likely end up with a queue to get into the shower, best expectation is to assuming there will be no free showers available and it will be a bonus if you did.
I have done NZ2 all the way on J, and there was between 5-10 minutes between arriving to the lounge and boarding announcement - so very likely there is NO time for a shower.
If anything, the only difference I can observe is traveling in J/Y+ over Y which you might have a slight edge.
Last edited by dadig; Mar 17, 2018 at 2:08 am